Tumblr AJAX

var $content = null;
var $loader = null;

function ajaxNavigation(ev) {
    ev.preventDefault();

    // Do fancy loading.
    $content.fadeOut();
    $loader.fadeIn();

    //  Get the page content via AJAX.
    $.get($(this).attr('href'), function (data) {
        var $newContent = $(data).find('#content');

        // Rebind the navigation.
        $newContent.find('#previous,#next').click(ajaxNavigation);

        // Insert the content from the loaded page into the current page.
        $content.html($newContent).fadeIn();
    });
}

$(document).ready(function () {
    $content = $('#content');
    $loader = $('#loader');

    // Override previous and next button functionality.
    $('#previous,#next').click(ajaxNavigation);
});